What is the relationship between inertia and mass?

Question

What is the relationship between inertia and mass?

Answer 1

Inertia is the tendency of objects to want to stop. Basically, you need  a certain amount of energy to move an object. As anyone who as ever thrown a heavy object knows, you need much more energy to move something with greater mass. Greater mass= more energy needed to move= greater inertia.

Answer 2

I thought inertia is the strength it takes to move the mass. The bigger the mass, the more inertia it takes to move it.

Answer 3

inertia is the measure of its mass

more mass more inertia and vice versa

Answer 4

If the object has more mass, its inertia is harder to overcome because it has a greater force than an object with less mass traveling at the same speed. Think of it this way...

Does it hurt more if you get hit by a ping pong ball moving at 20 km/hr or a car moving at the same speed? It's harder to overcome the inertia of the car because it has greater mass.

Get the picture?

Answer 5

Best Answer - Chosen by Asker

Force is the agent which causes a change in the velocity of an object and thereby to accellerate it. Inertia on he other hand is a property which relates to an intrinsic property of a body to resist any change in its state of rest or of motion (uniform or non-uniform). The term mass is used as a measure of inertia. The greater the mass of a body the less it will accellerate under the action of an applied force and vice versa.

Newton's first law of motion, is sometimes called, the law of inertia. It defines a special set of reference frames called inertial reference frames. a reference frame that moves with constant velocity with respect to the distant stars. The first postulate of Einstein's theory of relativity states:

"All the laws of physics are the same in all inertial reference frames."

This simple statement, the foundation of his special theory of relativity, was to have a profound impact on our concepts of Space